This C&O 2-6-6-6 strains mightily to get her 70 loads of eastbound coal moving at Thurmond, W. Va., in 1956. The Balky 1624 had slipped down, then cut off and run ahead to put down sand, and is now trying again. A full third of her tremendous engine weight rests on her lead and trailing trucks – dead weight that must be forced into motion in situations like this.